qemu-aarch64 hangs on cptofs during a build of NixOS SD card image
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
QEMU |
Expired
|
Undecided
|
Unassigned |
Bug Description
First, thank you for this incredible project.
While following this guide to build my own image of NixOS: https:/
I encountered a very strange behavior, qemu is correctly used and build most of the binaries until it executes this exact line over qemu: https:/
At this step, the qemu process goes to 100 % of CPU, hangs in a certain syscall I don't know which one (according to strace & gdb which has no symbols so breaking and looking the backtrace was useless).
According to iotop, no I/O was done.
And it spent all its time in this syscall during more than 10 hours, which looks anomalous to me.
I attach some of my CPU info:
model : 142
model name : Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
stepping : 10
microcode : 0x96
cpu MHz : 3107.071
cache size : 8192 KB
I'm using a ThinkPad T480 to perform those builds, I'm uncertain of how to debug further this issue, I discussed this with some people over #nixos-aarch64 and they told me they didn't know how to debug it further too.
I tried all with this package: https:/
Thank you in advance!
tags: | added: linux-user |
Update: compiling qemu upstream & using the latest version didn't change anything.
I don't know if this is an instance of user emulation limitations due to missing syscalls.